Finding the Third Proportional to 363,288 and 545,053.50

Step by Step Solution

1. Step 1: Write the proportion equation
   363,288 : 545,053.50 = 545,053.50 : x
2. Step 2: Convert to fraction form
   363,288/545,053.50 = 545,053.50/x
3. Step 3: Cross multiply
   363,288x = 545,053.50 × 545,053.50
4. Step 4: Simplify right side
   363,288x = 297,083,317,862.25
5. Step 5: Solve for x
   x = 297,083,317,862.25/363,288
6. Step 6: Final answer
   x = 817,762.54